Contact Us
Part D - Contact Us
Primary Mailing Address P.O. Box 266380
Weston, FL 33326
8AM to 8PM, 7 Days a Week

Our automated phone system may answer your calls during weekends and federal holidays from Feb. 15 - Sept. 30.
(844) 368-8738
      TTY 711
All Other Inquiries

Pharmacy Assistance
(855) 540-4744
      TTY 711
(855) 540-4744
      TTY 711
Coverage Determination/Appeals Fax Number (800) 527-0531
Manual Claims (855) 540-4744
Medication Therapy Management OptumRx MTM
Clinical Services Center
(866) 352-5305
Grievance Address and Phone Number OptumRx
Prior Authorization Department
P.O. Box 25183
Santa Ana, CA 92799
(855) 540-4744
      (TTY 711)
Coverage Determination/Appeals Address OptumRx
Prior Authorization Department
c/o Appeals Coordinator
P.O. Box 25184
Santa Ana, CA 92799
Manual Claims Address Attn: Medicare Part D
P.O. Box 968021
Schaumburg, IL 60196-8021
Return Address P.O. Box 266380
Weston, FL 33326
Enrollment Address P.O. Box 266380
Weston, FL 33326
Payment/ Remittance
Members Health Insurance 
PO Box 953668
St. Louis, MO 63195 – 3668

Members Health Insurance Company is a Part D plan with a Medicare Contract. Enrollment in Members Health Insurance Company depends on contract renewal. You must continue to pay your Medicare Part D premium. This information is not a complete description of benefits. Contact the plan for more information. Limitations, copayments, and restrictions may apply.

Beneficiaries generally must use network pharmacies to access their prescription drug benefit. Benefits, formulary, pharmacy network, premium and or copayments/ coinsurance may change January 1 of each year. The Formulary and/or Pharmacy Network may change at any time. You will receive notice when necessary.